I have the Nike as well; I received it as a gift. The watch is pretty. But it lacks an important feature (to me...), so I almost never use it. It doesn't have a split timer -- I use it primarily when running, not cycling, and my mile splits are important to me -- so the timer that only stops and starts, and can't take/record/recall splits just isn't that useful. Shame on Nike for selling an HRM for $100 that doesn't have this basic feature that many (perhaps most) cheaper models have. I have a Timex Bodylink system with GPS, and when I want to use an HRM that's what I use (strap is more comfortable for me too). My forays into HR training has been frustrating though, I think I need a coach .

I've found my "seamless" bras -- the ones that are knit in one piece, and don't have a separate, pieced band -- tend to fit better with the hrm.